GLP-1 receptor agonist
Semaglutide with the birth control pill
Many women of reproductive age take a combined or progestogen-only oral contraceptive while also using a chronic medication such as Semaglutide (Semaglutide). The combination is generally fine at 0.25mg, 0.5mg, 1mg, 2mg, 1.7mg, 2.4mg, but a small number of medications can reduce contraceptive efficacy meaningfully and need either a backup method or a switch.
How Semaglutide can affect contraceptive efficacy
Combined and progestogen-only contraceptives are metabolised through CYP3A4. Strong CYP3A4 inducers (some antiepileptics, rifampicin, St John's Wort) lower contraceptive plasma levels and reduce efficacy. Whether Semaglutide acts on CYP3A4 determines whether Semaglutide affects contraception. Most agents in GLP-1 receptor agonist have no clinically meaningful effect on the pill at 0.25mg, 0.5mg, 1mg, 2mg, 1.7mg, 2.4mg.
Practical guidance
According to the prescribing information for Semaglutide, women on hormonal contraception should review Semaglutide with the prescribing pharmacist or doctor. Where an interaction is documented, additional barrier contraception or switching to a non-oral method (IUD, implant) for the duration of Semaglutide therapy is the standard mitigation.
Frequently asked questions
Will Semaglutide make my pill less effective? ▾
Most GLP-1 receptor agonist medications at 0.25mg, 0.5mg, 1mg, 2mg, 1.7mg, 2.4mg do not affect oral contraceptive efficacy. The exceptions are CYP3A4-inducing drugs and a small number of others. The prescribing information for Semaglutide states whether the interaction is meaningful.
Do I need a backup contraceptive on Semaglutide? ▾
Backup contraception is needed only when there is a documented interaction between Semaglutide and the contraceptive method. For most users at 0.25mg, 0.5mg, 1mg, 2mg, 1.7mg, 2.4mg, no backup is required. The pharmacist confirms whether Semaglutide interacts with hormonal contraception.
Products containing Semaglutide
More on Semaglutide
- With alcoholSemaglutide and alcohol — is it safe to drink?
- With foodShould Semaglutide be taken with food?
- Side effectsSemaglutide side effects: common, rare and warning signs
- Dosage guideSemaglutide dosage guide: how much to take and when
- OnsetHow fast does Semaglutide start working?
- DurationHow long does Semaglutide last?
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.